include/utils/SkNWayCanvas.h

/*
 * Copyright 2011 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkNWayCanvas_DEFINED
#define SkNWayCanvas_DEFINED

#include "../private/SkTDArray.h"
#include "SkCanvasVirtualEnforcer.h"
#include "SkNoDrawCanvas.h"

class SK_API SkNWayCanvas : public SkCanvasVirtualEnforcer<SkNoDrawCanvas> {
public:
    SkNWayCanvas(int width, int height);
    ~SkNWayCanvas() override;

    virtual void addCanvas(SkCanvas*);
    virtual void removeCanvas(SkCanvas*);
    virtual void removeAll();

    ///////////////////////////////////////////////////////////////////////////
    // These are forwarded to the N canvases we're referencing

#ifdef SK_SUPPORT_LEGACY_DRAWFILTER
    SkDrawFilter* setDrawFilter(SkDrawFilter*) override;
#endif

protected:
    SkTDArray<SkCanvas*> fList;

    void willSave() override;
    SaveLayerStrategy getSaveLayerStrategy(const SaveLayerRec&) override;
    void willRestore() override;

    void didConcat(const SkMatrix&) override;
    void didSetMatrix(const SkMatrix&) override;

    void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override;
    virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
                            const SkPaint&) override;
    virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
                               const SkPaint&) override;
    virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
                                SkScalar constY, const SkPaint&) override;
    virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
                                  const SkMatrix* matrix, const SkPaint&) override;
    virtual void onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y,
                                const SkPaint& paint) override;
    void onDrawTextRSXform(const void* text, size_t byteLength, const SkRSXform xform[],
                           const SkRect* cull, const SkPaint& paint) override;
    virtual void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
                             const SkPoint texCoords[4], SkBlendMode,
                             const SkPaint& paint) override;

    void onDrawPaint(const SkPaint&) override;
    void onDrawPoints(PointMode, size_t count, const SkPoint pts[], const SkPaint&) override;
    void onDrawRect(const SkRect&, const SkPaint&) override;
    void onDrawRegion(const SkRegion&, const SkPaint&) override;
    void onDrawOval(const SkRect&, const SkPaint&) override;
    void onDrawArc(const SkRect&, SkScalar, SkScalar, bool, const SkPaint&) override;
    void onDrawRRect(const SkRRect&, const SkPaint&) override;
    void onDrawPath(const SkPath&, const SkPaint&) override;
    void onDrawBitmap(const SkBitmap&, SkScalar left, SkScalar top, const SkPaint*) override;
    void onDrawBitmapRect(const SkBitmap&, const SkRect* src, const SkRect& dst, const SkPaint*,
                          SrcRectConstraint) override;
    void onDrawImage(const SkImage*, SkScalar left, SkScalar top, const SkPaint*) override;
    void onDrawImageRect(const SkImage*, const SkRect* src, const SkRect& dst,
                         const SkPaint*, SrcRectConstraint) override;
    void onDrawBitmapLattice(const SkBitmap&, const Lattice&, const SkRect&,
                             const SkPaint*) override;
    void onDrawImageLattice(const SkImage*, const Lattice&, const SkRect&,
                            const SkPaint*) override;
    void onDrawImageNine(const SkImage*, const SkIRect& center, const SkRect& dst,
                         const SkPaint*) override;
    void onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst,
                          const SkPaint*) override;
    void onDrawVerticesObject(const SkVertices*, SkBlendMode, const SkPaint&) override;
    void onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[],
                     int, SkBlendMode, const SkRect*, const SkPaint*) override;
    void onDrawShadowRec(const SkPath&, const SkDrawShadowRec&) override;

    void onClipRect(const SkRect&, SkClipOp, ClipEdgeStyle) override;
    void onClipRRect(const SkRRect&, SkClipOp, ClipEdgeStyle) override;
    void onClipPath(const SkPath&, SkClipOp, ClipEdgeStyle) override;
    void onClipRegion(const SkRegion&, SkClipOp) override;

    void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override;
    void onDrawDrawable(SkDrawable*, const SkMatrix*) override;
    void onDrawAnnotation(const SkRect&, const char[], SkData*) override;

    void onFlush() override;

    class Iter;

private:
    typedef SkCanvasVirtualEnforcer<SkNoDrawCanvas> INHERITED;
};


#endif